Loading...
Please wait, while we are loading the content...
Similar Documents
A pc-based magnetometer-only attitude and rate determination system for gyroless spacecraft
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Challa, M. Natanson, G. Deutschmann, J. Galal, K. |
| Copyright Year | 1995 |
| Description | This paper describes a prototype PC-based system that uses measurements from a three-axis magnetometer (TAM) to estimate the state (three-axis attitude and rates) of a spacecraft given no a priori information other than the mass properties. The system uses two algorithms that estimate the spacecraft's state - a deterministic magnetic-field only algorithm and a Kalman filter for gyroless spacecraft. The algorithms are combined by invoking the deterministic algorithm to generate the spacecraft state at epoch using a small batch of data and then using this deterministic epoch solution as the initial condition for the Kalman filter during the production run. System input comprises processed data that includes TAM and reference magnetic field data. Additional information, such as control system data and measurements from line-of-sight sensors, can be input to the system if available. Test results are presented using in-flight data from two three-axis stabilized spacecraft: Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) (gyroless, Sun-pointing) and Earth Radiation Budget Satellite (ERBS) (gyro-based, Earth-pointing). The results show that, using as little as 700 s of data, the system is capable of accuracies of 1.5 deg in attitude and 0.01 deg/s in rates; i.e., within SAMPEX mission requirements. |
| File Size | 661497 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950021349 |
| Archival Resource Key | ark:/13960/t3518xn45 |
| Language | English |
| Publisher Date | 1995-05-01 |
| Access Restriction | Open |
| Subject Keyword | Astrodynamics In Situ Measurement Spacecraft Orbits Magnetometers Field Intensity Meters Orbital Position Estimation Line of Sight Real Time Operation Computer Programs Magnetic Measurement Attitude Inclination Explorer Satellites Algorithms Earth Radiation Budget Experiment In-flight Monitoring Determinants Mathematical Models Magnetic Fields Kalman Filters State Estimation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
